A056013 - OEIS

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A056013

Numbers n such that n | Sigma(n) - d(n) + Phi(n).

1, 2, 27, 65120, 3332064, 21940224, 351952896, 123346213728 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..8.`
	MATHEMATICA	`Do[If[Mod[DivisorSigma[1, n]-DivisorSigma[0, n]+EulerPhi[n], n]==0, Print[n]], {n, 1, 10^7}]`
	CROSSREFS	`Sequence in context: A113094 A076113 A182335 * A007257 A045487 A022376` `Adjacent sequences: A056010 A056011 A056012 * A056014 A056015 A056016`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v, Jul 24 2000`
	EXTENSIONS	`a(6)-a(8) from Donovan Johnson, Nov 12 2012`
	STATUS	`approved`

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Last modified June 19 23:19 EDT 2013. Contains 226416 sequences.